Detachable-wheel hub.



J. V. PUGH.

DETAGHABLB WHEEL HUB.

-APPLIGATION FILED JAN. e, 1912.

Patented Feb. 23, 1915.

2 SHEETS-"SHEET 1,

J. V. PUGH.

DETACHABLE WHEEL HUB.

APPLICATION FILED JAN. s, 1912.

Patented Feb. 23, 1915.

2 SHEBTS-SHEBT 2.

)Mfr

JOHN VERNON PUG-H, 0F ALLESLEY, ENG-LAND.

DETACHABLE-WHEEL HUB.

incense;

Specification of Letters Patent.

Patented Feb. 23, i.

Original application filed March 6, 1909, Serial No. 481,634. Divided and this application filed JanuaryG,

T0 all whom t may concern Be it known that l, JOHN VERNON PUGH, a subject of the King of Great Britain and Ireland, and residing at Guiting House, Allesley, in the county of Varwick, England, have invented certain new and useful improvements in Detachable-Wheel Hubs, of which the following is a specification.

rlhis invention relates to improvements in detachable wheels for motor and other vehicles.

The invention consists in a detachable wheel having an outer hub part detachable from 'an inner hub part carried upon an axle or axle sleeve, said parts being formed so that the end of the inner hub part eX- tends through the means which holds the detachablehub part to said inner hub part.

According to another feature of the invention the inner hub part is constructed in separable portions having a closed end, the detachable part being secured upon the inner part by a locking ring. By this construction the main or outer portion of the inner hub part may be formed of a stamping with a closed outer end and the length of the hub beyond the outer spokes of the wheel may be considerably reduced because no large end-closing nut is required. Suitable access for lubrication may be provided direct in theend of the inner hub part.

rl`he invention also consists in the improved construction of detachable wheels and details thereof as hereinafter indicated.

Referring now to the accompanying drawings: Figure l is a sectional view of a detachable driving wheel with a divided permanent h ub part and having a ring locking device. Fig. 2 is a View of a portion of the wheel shown in Fig. 1, the detachable hub part and locking ring being in section and the permanent h ub part in elevation in order to illustrate the quickly tapered engaging and centering dogs. Fig. 3 is a sectional elevation on the line A-A of Fig.

2. Figs. 4, 5 and 6 are various views of the locking ring. Fig. 7 is an elevation of the outer end of the wheel hub shown in Fig. l, the spokes and the rest of the hub being omitted. Fig. 8 is a detail View of the Serial No. 669,859.

pawl shown in position in the locking ring in Fig. 7.

ln carrying this invention into eli'ect as shown in Fig. l, I form the outer or detachable hub part a, of thin stamped metal, the inner end of which is preferably outwardly flanged to carry the inner spokes while the outer end is slightly inwardly flanged as shown at fu and carries a fianged stiflfening ring a, to provide increased thickness for the outer spokes. The inner hub part b, is also made of stamped metal in two parts, one having preferably a closed outer end, and the other part taking the form of a cap, e, or brake drum e, or combining both as shown inthe drawing. To provide clutch connections between the inner and outer hub parts, I form on the inside of the outer hub part, a, a number of quickly tapered dogs c, shown in Figs. 2 and 3, which may be formed by a stamping or pressing action, the amount of depression and the amount of metal removed by machining being small in order that the thickness of the metal shall not be reduced substantially. |The perinanent hub part, b, is likewise provided with wedge shaped engaging members (l, to correspond with and enter into the others. These dogs are formed so that in forcing the outer hub on to the inner one, the dogs center the hub and wedge tightly into one another, there being :is many dogs around the circumference of the hub as a given width of dog will allow. By forming the engaging dogs in this manner, l am able to maintain the maximum cross section of metal and to use stamped material without substantially weakening the structure at the clutch portion.

lthe outer end of the inner hub part is reduced in diameter and externally screwthreaded at 3 to receive a locking ring t through which it projects. This ring is shown separately in Figs. l, 5 and G. The locking ring carries a flange yu, which is adapted to bear against the ange o at the outer end of the detachable hub part, the in ner portion of this locking ring is screwthreaded to carry a collar w which is pref erablv screwed to opposite hand to the thread by which the ring is attached to the inner hub part and which is adapted to bear on the inside of the flange of the stiffening ring m, in order `to provide means for the positive withdrawal of the hub when the locking ring is unscrewed. The positive withdrawal ring may if desired be arranged in any other` convenient way. By thus forming the lock nut and the withdrawal ring the thread of the lock ring may be got at for examination or for retapping, if it becomes damaged, 4without taking the locking lring from the detachable hub.

4 Moreover as the ring is used and the end of the shell of the permanent hub is lvisible through. the ring the fitter is able to see whether the thread is engaged in putting on the wheel. or whether, when fixed the parts have been i really screwed right home. In the home position of the detachable part the outer end of the ring may be arranged to come flush with the closed end of the permanent hub or to any predetermined marked position on the hub.

In order to lock the ring t against inadvertent loosening I provide in the inner circumference of the outer fiange u a number of ratchet teeth .30, (see Fig. 7) with which teeth a pawl projection 3l, on a pawl 32, pressed by a spring 33, is adapted to engage. rllhe pawl 32, is carried within a recess 34, in the locking ring t. rIhe pawl is normally held in engagement with the ratchet teeth 30, in order to prevent slackening back of the locking ring. The recess 34,q is made in the ring t by means of a circular saw working from the inside. This saw just breaks through the external surface of the ring and the slot so formed is widened out to an appropriate shape and a groove 35 (see Figs. 5 and 6) is made for the path of the projecting part ofthe pawl which is held in the slot by means of a pivot, 36, passing sidewise into the ring. When the locking device is assembled. the pivot cf the pawl device is prevented from coming out by the withdrawal collar fw, before mentioned. Before the outer detachable hub part a, can be removed from the permanent hub part 5 the locking ring t must be unscrewed and toallow of this the pawl 32, must be pressed in so that the projection 31, on said pawl is clear of the ratchet teeth 30, formed on the outer hub part a, a suitable Spanner being employed to edect this purose. It is desirable however that the lock ing ring shall be as small in cross section as possible in order to obtain a substantial di-` ameter of thread on the inner hub part without involving an excessively large diameter of the outer hub part. wWhen the permanent hub part t has a closed outer end I place a lubricator 38, in this end, preferably of the form described in my English Patent No. 19e/1908.

Having now described my invention what I claim as new and desire to secure by Letters Patent is l. In combination in a detachable wheel hub, an inner permanent part, an outer detachable part mounted thereon, ratchet teeth carried by said outer part, an internal flange to said outer part, an open screwed ring through which the end of said inner part projects carried upon a thread on said inner part and engagin both sides of said internal flange, and resi ient pawl means 1ocated Within a cavity in said ring adapted to engage said ratchet teeth.

2. In combination in a detachable wheel hub, an inner permanent part, an outer detachable part mounted thereon, an internal iange in said outer part, an open screwed ring which engages both sides of said internal flange co-acting with a thread on said inner part and a sealed end to said inner part projecting throughsaid ring, whereby said outer hub part and locking. ring are removed from said inner hub part without permitting the escape of lubricant therefrom.

3. In combination in av detachable wheel hub, an inner permanent part, an outer detachable part mounted thereon, ratchet teeth carriedby the outer part, an internal flange to said outer part, an open ring screwed upon said inner part and rotating within said internal flange, projections on said ring engaging upon both sides of said internal flange, a sealed end to said inner part projecting through said ring, a pawl pivoted in a slotin said ring and a spring pressing said pawl into engagement with said ratchet teeth.

4. A. detachable wheel hub having in combination an inner permanent part, an outer detachable part mounted thereon, a narrow inturned flange at the end of said outer part, a stiifening ring fixed within said end prof vided with a wider inturned flange which abuts against said narrow flange, a locking ring carried by said inner part and projecting within said flanges, a ange upon said locking ring abutting against the outside of said narrow inturned flange to retain said outer part upon said inner part, a ring fastened upon the inward 4projecting part of said locking ring and abutting against the inside ef said wider inturned flange to withdraw said or '5er part from said inner part, the end of the inner part extending through said locking ring, said locKing ring having a slot in which is pivotally mounted a pawl, a projection on this pawl, ratchet teeth formed in the narrow inturned ange at the end of the outer part and a spring also mounted in the slot in the locking ring acting on said pawl to hold the pawl projection normally In testimony whereof I have signed my in engagement with said ratchet lteeth Wlierename to this specification in the presence of by inadvertentloosening of the locking ring two subscribing Witnesses. `is prevented, While said outer hub part and JOHN VERNON PUGH.

5 locking ring are removed together from said Witnesses:

inner hub part Without permitting the escape ALBERT BROWN, of lubricant therefrom. JOHN RAVEN. 

